This is a great question, and I wouldn't be surprised if the answer was quite low. Not because people are against it, but because people don't make the effort

This is a great question, and I wouldn't be surprised if the answer was quite low. Not because people are against it, but because people don't make the effort to get it. This will be a big hurdle for the covid vaccine as well I think. A quick Google search tells me that in the US, 33.9%–56.3% of adults get the seasonal flu shot (children are higher at 46.0%–81.1%).